(Bond valuation)FiveFive years ago XYZ International issued some 31-year zero-coupon bonds that were priced with a market's required yield to maturity of 11% and a par value of $1,000. What did these bonds sell for when they were issued? Now that 55 years have passed and the market's required yield to maturity on these bonds has climbed to 13%, what are they selling for? If the market's required yield to maturity had fallen to 9 %, what would they have been selling for?

a.What did these bonds sell for when they were issued?